OCaml编译器上的Windows编译模块错误。(i686-w64-mingw32-as)

I'm using Windows 7 64x and in my next semester, I'll have OCaml as main language in one of my lectures and I am more of a "Windows" person (I have windows version and cygwin-based version). So I decided to go over I'm using Windows 7 64x and in my next semester